Title :
A Novel Optical Analysis Method for the Focal Length of Muti-Core Image Fiber
Author :
Yang Zhigang ; Li Xiaotao ; Xu Guan ; Li Xuefeng ; Su Jian ; Ueda, Toshitsugu ; Liu Jianfang
Author_Institution :
Jilin Univ., Changchun, China
Abstract :
Focal length of multi-core image fiber is a crucial parameter for the performance of fiberscope. In this letter, we present a novel method that includes simulating the transmission process of waveguides by inputting a plane wave in the wavelength of 0.5 mum in cores using finite-difference time-domain (FDTD) method, integrating the power outputs in the end of the core and conforming the numerical aperture (NA) corresponds to the descending area of the output power curve. According to the geometry structure of the fiber, we can calculate the focal length of image fiber conveniently. Computer simulations of a multi-core image fiber with 2.20 mum core diameter show that the focal length is 1.258 mum. The numerical experiments have demonstrated that the FDTD method can be used to calculate the focal length of image fiber accurately.
Keywords :
finite difference time-domain analysis; optical fibres; FDTD method; fiber geometry structure; finite-difference time-domain method; focal length; muticore image fiber; numerical aperture; optical analysis method; plane wave transmission process; power curve; size 2.20 mum; wavelength 0.5 mum; Apertures; Computational modeling; Finite difference methods; High speed optical techniques; Image analysis; Numerical analysis; Optical interconnections; Optical waveguides; Solid modeling; Time domain analysis;
Conference_Titel :
Photonics and Optoelectronics, 2009. SOPO 2009. Symposium on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-4412-0
DOI :
10.1109/SOPO.2009.5230220
